Intro

In this tutorial I will guide you through the process of Jailbreaking & Unlocking an 1.1.2/1.1.3 OTB iPhone. The end result should be a 1.1.3 iPhone ready to install applications & capable of being used with any sim-card (Not just O2, ATT, T-Mobile, Orange).

Required Files

Useful Files

Step 1 : Downgrade your phone to 1.1.1

Connect the iPhone to your Mac.
If you have added info to the iPhone already (contacts, music, calendars, etc), you should sync now in iTunes to save your personal info. Make sure to import any photos you have taken as well in iPhoto, as this process will delete all your personal info from the iPhone. Assuming you sync now, you should be able to get your info back on the iPhone. Note: any SMS and voicemail will most likely be deleted.

With iTunes open and the iPhone connected, hold down the Sleep and Home buttons on the iPhone for roughly 15-20 seconds, until it displays a picture of the iTunes icon and a cable plugging into it.

iTunes will now detect the iPhone in recovery mode and display the following message:Press OK

Hold down the option(alt) button, and click Restore.

iTunes will ask you which firmware file you would like to Restore with. Choose the 1.1.1 firmware file we downloaded earlier. It should be called iPhone1,1_1.1.1_3A109a_Restore.ipsw. Hit Open.

iTunes will now Restore your iPhone to the 1.1.1 firmware. This will take around 6 minutes. During this time you will see the following status messages:

This unlock will not work folks! Sounds like you’re getting your chained yanked! Its impossible to download from 1.1.2 or 1.1.3 down to 1.0.2 Couldnt ever be done and cerftainly cant now. Can only downgrade to 1.0.2 from 1.1.1 NOT OTB 1.1.2 or 1.1.3.. Sorry folks…youve ben had!

hi i accidently upgraded my phone version from 1.1.2 to 1.1.3. can u guide me how to downgrade it to 1.1.1 and unlock.i tried 1.1.1.but it shows error 1 and it does not do anything
can u help me out from this problem
thanks
ashok

I purchased a v1.1.2 unlocked Iphone as a gift, sent it down and he says that the screen shows a padlock, with a slide across to open and then when the next screen comes up it’s a dial pad and he can only type in an emergency number. Could you help me help him by explaining what is going on and how he can get out of those screens? Any direction at all would be greatly appreciated.

hi i accidentally upgraded my phone version from 1.1.2 to 1.1.3. can u guide me how to downgrade it to 1.1.1 and unlock.i tried 1.1.1.but it shows error 1 and it does not do anything
can u help me out from this problem